NASA wanted to know if extended periods of weightlessness would have an impact on long-term circulatory function. The agency located seven former astronauts who had spent more than one month in space under conditions of weightlesness, and tested all aspect of their cardiovascular function. NASA's research with these seven astronauts would be considered to be

a) Survey research
b) Correlational research
c) Experimental research
d) Case study research

D

The scientific approach shows that

a) There are no general laws or principle that apply to human behavior
b) Events are governed by some lawful order
c) Each event is completely unique
d) The search for absolute truth is the ultimate goal

B

Scarlett is a graduate student who is observing children playing together after watching a film. She knows that some children saw a film that contained graphic scenes of violence and some children saw a non- violent film, but she doesn't know which film each child she is observing watched. In this case, Scarlett is recording data for

a) A double blind research film
b) An unethical research study
c) A study with two independent variables
d) A correlational study with confounded variable

Imagine that the personality traits of openness and extroversion are positively correlated. If Andrea's score in openness is extremely low

a) She would most likely score at the high end of the extroversion scale
b) It is impossible to predict how she is likely to score on the ectroversion scale without more information
c) She would probably score close to the median on the extroversion scale
d) She would most likely score at the low end of the extroversion scale

D

To determine whether students would like more courses scheduled in the late afternoon and evening hours, the Student Services department send questionnaires to 50 students selected at random from the 5,000 who are registered at the campus. In this instance, the 5,000 students who are registered at the campus would be

a) A population
b) The independent variable
c) A biased sample
d) A representative sample

A

To discover whether residents of a city are in favor of building a new sportd stadium, the team's owner randomly selected and interviewed 500 of the city's 500,000 residents. In this instance, the 500 people that the owner interviewed would be

a) The dependent variable
b) A representative sample
c) A biased sample
d) A population

B

Melvin and Leigh are interviewing students at their campus to determine if the students agree or disagree with a proposed policy change. Melvin believes the proposed policy change is a good idea, but Leigh believes the change is bad for students. Nearly all the students who Melvin interviewed supported the policy change, but nearly all the students who Leigh interviewed disapproved of the change. The differences in the results illustrate the potential impact of

Dr. Jacobsen in investigating the link between social and support networks and grades in school. Students in his classes are required to complete survey forms related to this research; however they are never told about the purpose of the survey. In this case, some researchers might argue that Dr. Jacobsen's research violates the ethical principle of